//
//  VVStack.h
//  SideDemo
//
//  Created by zsp on 16/5/13.
//  Copyright © 2016年 zsp. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface VVStack : NSObject

- (void)push:(double)num;
- (double)top;
- (double)pop;
- (NSUInteger)count;
@end
